/*
* Copyright (c) Microsoft Corporation. All rights reserved.
* Copyright (c) 2023 Huawei Device Co., Ltd.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*     http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* This file has been modified by Huawei to verify type inference by adding verification statements.
*/

// === tests/cases/conformance/types/thisType/contextualThisType.ts ===
declare function AssertType(value:any, type:string):void;
interface X {
    a: (p: this) => this;
}

interface Y extends X {
}

let x: Y = {
AssertType(x, "Y");
AssertType({    a(p) {        return p;    }}, "{ a(Y): Y; }");

    a(p) {
AssertType(a, "(Y) => Y");
AssertType(p, "Y");

AssertType(p, "Y");
        return p;
    }
}

let y = x.a(x);
AssertType(y, "Y");
AssertType(x.a(x), "Y");
AssertType(x.a, "(Y) => Y");
AssertType(x, "Y");


